addressbean.java

我在加拿大学习的一个比较复杂的在线银行程序.

package com.ebusiness.ebank.ejb.entitybean;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: eBusiness Inc., All right reserved</p>
 * @author unascribed
 * @version 1.0
 */

import java.sql.Timestamp;
import javax.ejb.EntityBean;
import javax.ejb.CreateException;
import javax.ejb.EntityContext;

import com.ebusiness.ebank.exception.BusinessException;
import com.ebusiness.ebank.exception.SystemException;
import com.ebusiness.ebank.exception.ErrorMessages;
import com.ebusiness.ebank.bean.AddressValue;
import com.ebusiness.ebank.util.ValidationHelper;
import com.ebusiness.ebank.util.Constants;


abstract public class AddressBean implements EntityBean
{
    private EntityContext ctx;

    private static final String INSERT = "I";
    private static final String UPDATE = "U";
    private static final String DELETE = "D";

    //Bean attribute accessor
    abstract public Long getObjectID();
    abstract public void setObjectID(Long oid);
    abstract public String getAddressType();
    abstract public void setAddressType(String AddressType);
    abstract public String getStreetNo();
    abstract public void setStreetNo(String streetNo);
    abstract public String getStreetName();
    abstract public void setStreetName(String streetName);

    abstract public String getSuiteNo();
    abstract public void setSuiteNo(String suiteNo);
    abstract public String getCity();
    abstract public void setCity(String city);
    abstract public String getProvinceState();
    abstract public void setProvinceState(String provinceState);
    abstract public String getCountry();
    abstract public void setCountry(String country);
    abstract public String getPostalZipCode();
    abstract public void setPostalZipCode(String postalZipCode);
    abstract public Long getCardholderOID();
    abstract public void setCardholderOID(Long oid);

    abstract public Timestamp getEffectiveDate();
    abstract public void setEffectiveDate(Timestamp effectiveDate);
    abstract public Timestamp getExpiryDate();
    abstract public void setExpiryDate(Timestamp expiryDate);

    abstract public String getCreateUserID();
    abstract public void setCreateUserID(String createUserID);
    abstract public Timestamp getCreateDate();
    abstract public void setCreateDate(Timestamp createDate);
    abstract public String getUpdateUserID();
    abstract public void setUpdateUserID(String updateUserID);
    abstract public Timestamp getUpdateDate();
    abstract public void setUpdateDate(Timestamp expiryDate);
    abstract public String getAction();
    abstract public void setAction(String action);

    // Business methods

    /**
     * Parse the entity bean value to AddressValue object
     *
     * @return AddressValue
     */
    public AddressValue getValueObject()
    {
        AddressValue value = new AddressValue(this.getObjectID().longValue());

        value.setAddressType(this.getAddressType());
        value.setStreetNo(this.getStreetNo());
        value.setStreetName(this.getStreetName());
        value.setSuiteNo(this.getSuiteNo());
        value.setCity(this.getCity());
        value.setProvinceState(this.getProvinceState());
        value.setCountry(this.getCountry());
        value.setPostalZipCode(this.getPostalZipCode());
        value.setCardholderOID(this.getCardholderOID().longValue());

        //common values
        value.setEffectiveDate(this.getEffectiveDate());
        value.setExpiryDate(this.getExpiryDate());
        value.setCreateUserID(this.getCreateUserID());
        value.setCreateDate(this.getCreateDate());
        value.setUpdateUserID(this.getUpdateUserID());
        value.setUpdateDate(this.getUpdateDate());
        value.setAction(this.getAction());
        return value;
    }

    /**
   * Parse the key fileds of entity bean value to AddressValue object
   *
   * @return AddressValue
   */
  public AddressValue getLiteValueObject()
  {
      AddressValue value = new AddressValue(this.getObjectID().longValue());

      value.setAddressType(this.getAddressType());
      value.setStreetNo(this.getStreetNo());
      value.setStreetName(this.getStreetName());
      value.setSuiteNo(this.getSuiteNo());
      value.setCity(this.getCity());
      value.setProvinceState(this.getProvinceState());
      value.setCountry(this.getCountry());
      value.setPostalZipCode(this.getPostalZipCode());
      value.setCardholderOID(this.getCardholderOID().longValue());

      //common values
      //value.setEffectiveDate(this.getEffectiveDate());
      //value.setExpiryDate(this.getExpiryDate());
      //value.setCreateUserID(this.getCreateUserID());
      //value.setCreateDate(this.getCreateDate());
      value.setUpdateUserID(this.getUpdateUserID());
      value.setUpdateDate(this.getUpdateDate());
      //value.setAction(this.getAction());
      return value;
  }


    /**
     * Update addDelFlag field and replace the process date and time with current date and time.
     *
     * @param value :    AddressValue
     * @return      :    updated AddressValue
     */
    public AddressValue update(AddressValue value) throws BusinessException
    {
        this.validate(value); //validate the address before update it
        this.setAddressType(value.getAddressType());
        this.setStreetNo(value.getStreetNo());
        this.setStreetName(value.getStreetName());
        this.setSuiteNo(value.getSuiteNo());
        this.setCity(value.getCity());
        this.setProvinceState(value.getProvinceState());
        this.setCountry(value.getCountry());
        this.setPostalZipCode(value.getPostalZipCode());
        this.setUpdateUserID(this.ctx.getCallerPrincipal().getName());

        return this.getValueObject();
    }

    //validate the address. the address should be validated before inserting or updating
    private void validate(AddressValue value) throws BusinessException
    {
        if (!ValidationHelper.getInstance().isCountryValid(value.getCountry()))
           throw new BusinessException(ErrorMessages.COUNTRY_NOT_EXIST);
        if (!ValidationHelper.getInstance().isStateProvValid(value.getCountry(), value.getProvinceState()))
           throw new BusinessException(ErrorMessages.STATE_NOT_EXIST);
    }

    // Framework and lifecycle methods

    /**
     * This method will insert a record to the Address table.
     * The method should be called within Cardholder Entity Bean since the address
     * must have a valid cardholder
     */
    public Long ejbCreate(AddressValue value)
         throws CreateException, BusinessException
    {
        this.validate(value); //validate the address before save it
        this.setAddressType(value.getAddressType());
        this.setStreetNo(value.getStreetNo());
        this.setStreetName(value.getStreetName());
        this.setSuiteNo(value.getSuiteNo());
        this.setCity(value.getCity());
        this.setProvinceState(value.getProvinceState());
        this.setCountry(value.getCountry());
        this.setPostalZipCode(value.getPostalZipCode());
        //this.setCardholderOID(new Long(value.getCardholderOID()));
        String userID = this.ctx.getCallerPrincipal().getName();
        this.setEffectiveDate(value.getEffectiveDate());
        this.setExpiryDate(value.getExpiryDate());
        this.setCreateUserID(userID);
        this.setUpdateUserID(userID);

        return null; //for container managed persistence
    }

    public void ejbPostCreate(AddressValue value) throws CreateException {}

    public void ejbActivate() {}

    public void ejbLoad() {}

    public void ejbPassivate() {}

    public void ejbRemove() //this method will delete the record from database
    {
        this.setUpdateUserID(this.ctx.getCallerPrincipal().getName());
        this.setAction(this.DELETE);
    }

    public void ejbStore() {}

    public void setEntityContext(EntityContext ctx)
    {
        this.ctx = ctx;
    }

    public void unsetEntityContext()
    {
        this.ctx = null;
    }
}